Iit is a vinyl Slider. Stamped on the metal frame between the Panes of glass
Is ?Mecer Ind. mfg. 91-1.
Glass panes are 45 x 74.
R/O is 80x96.
I hope the info. is helpful in Assisting me with the fix.
The one pic showes the rivoits the upper one is 2? above the handle.
The lower one is even to the bottom of handle.
I removed the vinyl Strip that covers the glass frame to the door frame
Thank you.